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Est. delivery between and
SIMATIC S7-400, SM 421 DIGITAL INPUT MODULE, OPTIC. ISOLATED, 32 DI, 24V DC
Increasingly PLC/ HMI control platforms are becoming obsolete and parts are no longer supported, however PLC Direct had the HMI we needed and fast shipping for our system to get back online!
With supply chain issues increasingly affecting our business, PLC Direct has been there for us to supply the PLC products we need, when we need it. If they don't have it readily available, they find it and provide it quickly and reliably. This has helped us move forward with several projects that would have otherwise taken us many, many months to complete.